Mold.



F. W. GASE & W. H. BURNWORTH.

MOLD.

APPLICATION FILED MAILS, 1913.

Patented Aug. 11, 1914.

5] n ucmtozs wi tmeooeo THE NORRIS PETERS CO., PHOTOLITHOU WASHINGTON, D, C:

TED STATES PATENT OFFICE.

FREDERICK W. CASE AND WILLIAM H. BITRNWORTI-I, OF COLUMBIA CITY, INDIANA.

Mom).

Spe eificationof Letters Patent.

Application. filed March 3. 1913.

To all whom it may concern: 1

Be it known that we, FREDERICK W. CASE and l VILLIAM H. BURNWORTH, citizens of the United States, residing 'at Columbia City, in the county of Whitley and State of Indiana, have invented certain new and useful Improvements in Molds; and-we do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to improvements in molds and particularly to molds for forming concrete staves blocks or the like.

. One object of the invention is to provide a mold of this character provided with means for forming staves or blocks having matched edges which when the staves or blocks are brought into operative engagement form a close interlocking joint between the staves.

Anotherobject is-to provide a mold comprising separable sections adapted when unfastened to be readily disengaged and re-' moved from the finished stavesor blocks and having means whereby the sections are securely fastened together to form the mold.

With these and other objects in view, the invention consists of certain'novel features of construction, and the combination and arrangement of parts as will be more fully described and claimed.

In the accompanying drawings; Figure 1 is a perspective view of our improved mold; Fig. 2 is a horizontal sectional view thereof taken immediately above one'of the fastening devices for the mold sections Fig. 3 is a top plan view of the mold showing the same arranged for forming staves or blocks .and having. tongued and grooved edges;

Fig. 4 is a vertical sectional view taken on the line 4-4 of Fig. 2; Fig. '5 1s a detail perspective view of a portion of one of the sections of the mold showing the stationary members of the fastening devices Flg. 6 is a similar view of theclasp or'movable member of the fastening devices of the mold sections.

In the presentembodiment of the invention the mold is shown as comprising two segmental or slightly curved plates 1 and 2.

The. plates 1 and 2 correspond substantially in size and shape as shown. One endof the plate lis'curved laterally to form a hook shaped flange 3 while a similar flange 41s formed. on the adjoining end of the section or plate 2;fsaid flange-4 being of slightly.

ing the flanges 3 and 4 and when thus arranged the curved or rounded portion of the member projects inwardly as shown. The curved flanges 3 and 4 not only serve to form this end of fasten this end of the plates 1 and 2 together 1n operative engagement for forming the mold. The opposite end of the plates 1 and 2 are detachably fastened together and into flange 8 into which i i or sections 1 and 2 opposite to the ends havi the mold but also serve to I i engagement with the end formmg member 5 1 i by suitable fastening devices arranged near the upper and lower edges of the mold as shown. Each of the fastening devices comprises a stationary member or keeper 6 and a hinge member or hasp 7. The stationary member or keeper 6 is formed by extending this end of upper and lower transversely disposed cleats 8 and 9 which are secured to the outside side of theplate or section 1 of the mold by rivets or other suitable fastening devices as shown. In the upper edges of the keepers 6 formed by the projecting ends of the cleats 8 and 9 are notches 10 with which are engaged the free ends of the hasps vided with notches 11 whereby an interlocking connection is provided between the hasps and the keepers. The hasps 7 are provided .7, the engaging edges of which are also proi at their opposite ends with eyes 12 which are engaged between andare disposed in alinement with pairs of eyes 13 formed on the adjacent end of upper and lower transverse cleats 14 which are riveted or otherwise rigidly secured to the outer side of the plate or section 2 of the mold as shown. With the eyes 12 and13 is engaged a pivot pin or pintle 15 whereby the hasps 7 are hingedly attached to the cleats 14. When thus arranged the hasps 7 are adapted to be swung across this end of the mold and the notched edge of the hasps engaged with the notches 10 in the keepers6 as clearly shown in Fig. 1 of the drawings. It will be understood that the engagement of the curved opposite ends of the side plates of the mold will allow l forms :they groove thisedge of-the stave.

either these plates to" be readily vertically thus permitting thehasps'? to be swung into positionas above described with- V out strikingthe ends of the cleats 8 and 9 which form the keepers of the hasps. After: the hasps have been swunginto operativejposition, the side'plat es'il and '2 maybe again adjusted to proper positions and thenotch'es 11 in the hasps engaged with the notches-10" in' the keepers;as described. The 'hasp's 7 T are held againstcasualdisengagement from E the keepers .6 by hand levers l6 having on their inner ends'cam: heads 17 "WlllChT arei pivotally secured to oneside of the freeends 5 of'hasps'7 in positionxto be forced into en-. 1

gagementE'With-the outer sides of the keepers i 6 and when the handles '16 are swung down- Wardly 'aS. shown the. cam head 17. will tend to: drawfonewalliofnotch 11 against the ad- 2 jacent'inner face of the end of the keeper 6,

thus.- causing a'jbinding frictional engagement between said parts. This construction r it will vbe seen greatly reduces the tendency;

of'the hasp 7 becomingldisengaged from itsg keeper and takescare of wear .and a loose? engagementof the notches10and- 11.

WVhen the mold;is;.-,constructed and arranged as herein'lshown and described it wlllg :be'seen thatthe curved flanges 3 and 4: which formone end of the-mold will form a rounded edgezon' the staveior lolock at this end of{ themold' 'while the'curved member 5, at the i opposite" end ofthe nioldwill form a groove},

groovedfedg'es, mold blocks 19 and:2-O arei "provided;' -Th'e hlock'19'has in its Qinne'r: edge:falongitudinalxchannelor recess '21 which *forinsithetongue on this edge ofthe stave and said-block 19 has-its outer edge rounded as at 22 toengage andfit into the curved flange =fof*the plate 2 at this endi --of 'the moldh The block '20 which is. dis- ;posed in the fopposite-end of thezmold'has (on its inner edge a rib 'or tong e 23, which The 'blo'ck;20has its -ou'ter'edge recessed to; conform tothe curvature or rounded sur-"j '3; face-'ofrthe spacing' member '5 which forms? this end 'lo-fgtheimold as :clearly' shown in; Figi 1370f the drawings. When the blocks '1'9 and 20 are constructed. and arranged. as E herein 1- s'hown and. described it will be seen thatgthe stav'es will be somewhat narrower than those formed: inq'the' mold T Without the blocks 19 and'QOf'a'nd that the staves formed with said blocks will have .on 'one"- edge position? for use ther'tofigue' and grooved edges thereofzwill to nadoe interlocking pine; fter tte' states have as; molded a u ie yiset the haspsl aredisem gagedfrom their keepers andthis e nd'j of: I the; mold sections of plates 1 and 2' thus released. After this end of the plates, .has. been released the opposite flanged ends "thereof are disengaged from each "other and from "this end of the j sta-ves and the plates or sections land 2 arethen removed from the molded stave withoutfdis.

turbing the. latter whichfisfallowed to" stand 'and hardenil Inorder to facilitateithe removal of-the: plates or *s'e'ctionsl and Qifro'm the "molded stave the npper-cleat -8 ofthe o tion 2 areextended beyond the flangedien'ds I section 1 and'the upper cleat 14 ofthe 'secof the. sections" or plates to form? handles 24 which may be grasped *by the operator and the sections or plates Land" 2 thereby molding "the staves the lat ter may be provided with anysuitablefre' readily. handled.

' In forming or inforcement; which 7 is, embedded thereinin the usualcmanner iltwill also be-obvious I? that while the mold has beenfsh own and-described forforming 'staves for use-'inibui'ld- .ing silos or'other cylindrical structures,- it is obvious :that'the. sectionstor plates bf-"the mold may be shapedi'difi'erentlyfrom"that shown 7 in, the present-instance and. the mold employedffor forming blocksfof ether shape, I and by employing coi es,"-door,' windowyor m0ld.- -V 7 From the foregoing 'descr'iptiontaken' in connection, with the; accomp anying drawother open f frames -'*m ay' be formed iri the ings, thelsconstruction and' operationiof'the invention" will:-be readily imderstoodfwith out requiringa more 'extended:explanation.

Various changes in theiform; proportion and the minor. details lof construction may 'be' resorted to without'departingfrom the tages of the'invention as claimed. j: Havmg thus 1 escribed we clann .1s:-

invention, what 7 principle' or sacrificing any 'of' the advan- 1. A mold of the character "described com-i iprising 'side :plates having on one edge curved laterally proj ecting flanges adapted ftofbe engagecl to form 5. an interlocking connection for 'these ends of. tlie plates and whereby this edge iof the block formed the mold is rounded, a spacing member com-- prising a substantially U shaped' plateian.

ranged between "the opposite ends of the side plates whereby a curved grooveiis formed in this edge 10f the moldedblock, up-

per and l'owercleatssecured tothe outer sides .ofisald side plates, the' cleats of one pfsaid plates. proj eating beyond'one edge thereof iand ihaving therein-notches adapted ito form 1 i ':keepers," hasps' hingedly connecteclfto theadjacent endsofthepleatsofjthe opposingplate and having therein notches" adapted tobe'engagedwith-the notchsginisaidkeep ers whereby this end of the mold is fastened and cam levers pivoted to the free ends of said hasps and adapted to be swung downwardly into operative engagement with the keepers whereby the hasps are held against casual disengagement from the keepers.

2. A mold of the character described comprising side plates, curved laterally projecting flanges formed on one end of the latter for interlocking engagement, a closing member interposed between the opposite ends of said plates, upper and lower cleats secured to the outer sides of said plates, the cleats on one of said plates projecting beyond one edge thereof and having therein notches, hasps hingedly carried by the contiguous ends of the cleats on the companion plate and having therein notches for engagement with those in said cleats, and cam levers pivotally mounted on the free ends of said hasps, whereby to be swung downwardly and into frictional engagement with the keepers when the hasps are in operative position to avoid accidental disengagement of the latter.

In testimony whereof we have hereunto set our hands in presence of two subscribing witnesses.

FRED W. CASE. WILLIAM H. BURNWORTH.

Witnesses:

WILBERT L. ERNE, CHARLES 0. Com.

00p! 0! thin patent my be obtained. (or live cents each, by eddrening the Commiulonez 0! Patents. Washington, I). 0." 

